You don't need resources if you are small and unknown. Run it at your house until you have a few thousand users, and then move to something like Hetzner (if you're one of those Swiss people with 25 Gb/s Internet, skip step 2). If I'm interpreting their grafana[0] right, Wikimedia gets ~20 edits per second and usually peaks less than ~200k requests/second across all projects, and it looks like traffic has not exceeded 7 Gb/s over the last 90 days across all data centers. Even the largest projects are not a lot from a technical perspective these days.

[0] https://grafana.wikimedia.org